Scatterplots

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What is a scatterplot?

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A scatterplot is a graphical representation that displays the relationship between two quantitative variables, using points to represent individual data points.

Tags

CCSS.8.SP.A.1

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What does a trend line in a scatterplot indicate?

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A trend line indicates the general direction or pattern of the data points in a scatterplot, helping to visualize the relationship between the variables.

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CCSS.8.SP.A.2

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How can you use a trend line to make predictions?

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You can use a trend line to make predictions by extending the line to estimate the value of one variable based on the value of another.

Tags

CCSS.8.EE.B.5

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What is a positive correlation in a scatterplot?

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A positive correlation occurs when an increase in one variable corresponds to an increase in another variable, resulting in a scatterplot that slopes upwards.

Tags

CCSS.HSS.ID.B.5

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What is a negative correlation in a scatterplot?

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A negative correlation occurs when an increase in one variable corresponds to a decrease in another variable, resulting in a scatterplot that slopes downwards.

Tags

CCSS.HSS.ID.B.5

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What does it mean if a scatterplot shows no relationship?

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If a scatterplot shows no relationship, it means that there is no discernible pattern or correlation between the two variables being analyzed.

Tags

CCSS.HSS.ID.B.5

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How do you interpret the slope of a trend line?

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The slope of a trend line indicates the rate of change between the two variables; a steeper slope suggests a stronger relationship.

Tags

CCSS.8.EE.B.5

Front

What is the purpose of using scatterplots in data analysis?

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Scatterplots are used to visually assess the relationship between two variables, identify trends, and detect outliers.

Tags

CCSS.8.SP.A.1

Front

What is the significance of outliers in a scatterplot?

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Outliers are data points that deviate significantly from the trend of the rest of the data; they can indicate variability or errors in data collection.

Tags

CCSS.8.SP.A.1

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How can you determine the strength of a correlation from a scatterplot?

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The strength of a correlation can be determined by how closely the data points cluster around the trend line; tighter clustering indicates a stronger correlation.

Tags

CCSS.HSS.ID.B.5